It just doesn’t make sense. The Golden calf was before the Hebrews knew that there was a law. I realize that we mere mortals cannot discern G-d’s purpose, but you should also keep that in mind. Your claim is that G-d changed his mind in 1400 years, or was committing fraud on HIS people. I don’t believe that either is true.
God declaring 500 years ahead of time he was changing the game.